The 2018 NCAA Division I Baseball season, play of college baseball in the United States organized by the National Collegiate Athletic Association (NCAA) at the Division I level, began in February 2018. The season progressed through the regular season, many conference tournaments and championship series, and concluded with the 2018 NCAA Division I baseball tournament and 2018 College World Series. The College World Series, consisting of the eight remaining teams in the NCAA tournament and held annually in Omaha, Nebraska, at TD Ameritrade Park Omaha, ended on June 28, 2018.
The 2018 season was also the last for two other teams in their then-current conferences. Both teams moved between the same two conferences, but in opposite directions.
Finally, one other Division I team changed its institutional and athletic identities immediately after the 2017âÂÂ18 season. Indiana University and Purdue University dissolved Indiana University â Purdue University Fort Wayne (IPFW) on July 1, 2018. IPFW's academic programs in health sciences transferred to the IU system as Indiana University Fort Wayne; all remaining academic programs were transferred to the Purdue system as Purdue University Fort Wayne (PFW). From 2018 to 2019, the former IPFW athletic program represents only PFW, and its Summit League membership was assumed by PFW. Shortly before the dissolution took effect, but after the school's baseball season had finished, the athletic program announced that it would henceforth be known as the Purdue Fort Wayne Mastodons.
For the first time, the 2018 NCAA Division I baseball tournament seeded the top 16 teams, rather than only the top 8 teams as had been the practice since 1999. This ensures that the regional featuring the top-seeded team is paired with the regional hosted by the 16th-seeded team, where in the past Super Regionals were paired generally along geographical lines.
Of the 31 Division I athletic conferences that sponsor baseball, 29 end their regular seasons with a single-elimination tournament or a double elimination tournament. The teams in each conference that win their regular season title are given the number one seed in each tournament. Two conferences, the Big West and Pac-12, do not hold a conference tournament. The winners of these tournaments, plus the Big West and Pac-12 regular-season champions, receive automatic invitations to the 2018 NCAA Division I baseball tournament.
The 2018 College World Series began on June 16 in Omaha, Nebraska.
This table lists programs that changed head coaches at any point from the first day of the 2018 season until the day before the first day of the 2019 season.